ADVANCED PROGRAMMING CONCEPTS - Python
Subject : ADVANCED PROGRAMMING CONCEPTS - Python
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SD Bhosale
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MCQ Discussion:
Which statement correctly assigns the string "Rahul" to the variable name?
a) name = print( "Rahul")
b) input("Rahul")
c) name = "Rahul"
d) name = input("Rahul")
Ans: c)
Explanation:
name = print("Rahul")
print("check",name)
name = input("Rahul")
print("asflksdjflkdjflkdsjflkdj check none none",name)
name = "Rahul"
print("check",name)
Output:
Rahul
check None
Rahul
asflksdjflkdjflkdsjflkdj check none none
check Rahul
Thank you to Onkar Kale to bring and ask this MCQ.
Thank you to Mr. Jaydev for giving some explanation regarding this MCQ.
Because of him, I could able to understand.
Today's Programs:
# Accessing Items
# You can access the items of a dictionary by referring to its key name,
# inside square brackets:
# Example
# Get the value of the "model" key:
thisdict = {
"brand": "Maruti",
"model": "k10",
"cc": 1000,
2:20,
1.5:"TYMECH"
}
x = thisdict[1.5]
print(x)
print(type(x))
y=thisdict["brand"]
print(y)
Output:
TYMECH
<class 'str'>
Maruti
# There is also a method called get() that will give you the same result:
# Example
# Get the value of the "model" key:
thisdict = {
"brand": "Maruti",
"model": "k10",
"cc": 1000
}
x = thisdict.get("model")
print(x)
Output:
k10
# Change Values
# You can change the value of a specific item by referring to its key name:
# Example
# Change the cc to 1000:
thisdict = {
"brand": "Maruti",
"model": "k10",
"cc": 800
}
print(thisdict)
thisdict["cc"] = 1000
print(thisdict["cc"])
print(thisdict)
Output:
{'brand': 'Maruti', 'model': 'k10', 'cc': 800}
1000
{'brand': 'Maruti', 'model': 'k10', 'cc': 1000}
# Loop Through a Dictionary
# You can loop through a dictionary by using a for loop.
# When looping through a dictionary,
# the return value are the keys of the dictionary,
# but there are methods to return the values as well.
# Example
# Print all key names in the dictionary, one by one:
thisdict = {
"brand": "Maruti",
"model": "k10",
"cc": 1000
}
print("Displays Keys:")
for x in thisdict:
print(x)
print("Displays Values:")
for y in thisdict:
print(thisdict[y])
Output:
Displays Keys:
brand
model
cc
Displays Values:
Maruti
k10
1000
# Example
# Print all values in the dictionary with keys, one by one:
thisdict = {
"brand": "Maruti",
"model": "k10",
"cc": 1000
}
for x in thisdict:
print(x,":",thisdict[x])
Output:
brand : Maruti
model : k10
cc : 1000
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